Twin charged vw?

[DirtCheapFrank]

Is it possible or has anyone even twin charged (both supercharging and turbocharging an engine) a vw aircooled engine?

[V8Nate]

Anything is possible and I'd love to experiment with it. I think most haven't due to lack of space and difficulty

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[my_medusa]

Some have tried it but to be honest, it makes no sense. In the aircooled world you have Displacement from 1,2-3l+, modern turbiocharger outperform superchargers huge and can do the job way more efficent. And that super Low Torque as i said can be easiert and less restrictive be done with displacement+ turbo. All the extra weight and Technik are also contra produktive ( rear wheel weight, Coast, Stress to the engine, more parts that can fail). Plus there is no real world use of an all Torque Performance as our Cars are lightweight and have alot of traction, than at the end it's about Performance.

[DORIGTT]

Is it possible or has anyone even twin charged (both supercharging and turbocharging an engine) a vw aircooled engine?

Why are you looking to twin charge your car?

[Piledriver]

Twincharging is a nasty packaging problem, whether done with a turbo/blower combo or two turbos.
ACVWs generally already have a packaging problem due to layout as well as the cooling system.
Typically it also requires two chargecoolers as well, one for each stage, compounding the issues. (pun intended)

Modern, single turbo setups likely outperform the twincharging setups of the Lancia rally cars of yore.
For drag racing use, the Boba 2L AWD Mk2s/Mk3s are pushing nearly 2000 HP.

Twincharging: Not worth the effort.

I was eyeballing sticking a blower on an ACVW using the snout bearing setup developed for aircraft, as the T1 or T4 snout bearing (same bearing BTW) has long been shown insufficient to handle heavy sideloads needed for serious use with a blower. (>10 PSI, daily driver reliability) The mod basically involves align boring for a long, large bearing sleeve and a slipover crank extension with a std T1 #2 main bearing diameter, just several inch long bearing surface to handle propeller loads.
(there are also custom cranks made for purpose, but $$$$$)
This would involve a custom or at least heavily modified T4 cooling setup, as the blower could go on top of the block, with manifolds on sides, blower would replace the std plenum, have intercoolers either side like modern V8 factory setups.
(obviously custom plenum/manifold

In the end, a turbo setup will be a lot more efficient as well as ~infinitely easier to package, so the gen5 M62 blower is probably going on a VW MK1. It also helps that I can buy the 6 rib serp belt setup off the shelf as it was stock on the G60s Corrados. (some differences exist but it has been done before using various factory bits)

[blue72beetle]

I had a Corrado G60 that was twin charged. I guess it worked, but when I bought it the timing belt had broken and bent all the valves.
I was going to swap a 1.8 turbo from an Audi TT into it, but a Karmann Ghia came my way and I had no more room, so the Corrado had to go. Wish I still had it.